of the most contentious moments came when senator john mccain asked whether the 2007 surge troop in iraq was successful. >> the question is, were you right or wrong? that's a pretty straightforward question. i would like you to answer whether you are right or wrong and then you are free to elaborate. >> well, i'm not going to give you a yes or no answer on a lot of things. >> let the record show that you refuse to answer that question. now, please go ahead. >> well, if you would like me to explain why -- >> no, i actually would like an answer. yes or no. >> well, i'm not going to give you a yes or no. >> another hot topic at the hearing today, it was a 2006 interview that hagel gave to former middle east peace negotiator, erin david miller. now, in that interview, hagel said this. "the jewish lobby intimidates a lot of people up here." now, today of that comment about the "jewish lobby," hagel said categorically, i regret it. >> i've already said i regret referencing the jewish lobby. i should have said pro-israel lobby. i think it's the only time on the record that i've ever said that.